P
US7918095B2ActiveUtilityPatentIndex 20

Heat actuated cooling system

Assignee: FOI GROUP LLCPriority: Jun 12, 2007Filed: Jun 12, 2008Granted: Apr 5, 2011
Est. expiryJun 12, 2027(~0.9 yrs left)· nominal 20-yr term from priority
Inventors:MUNSON DAVID MURRAY
F25B 27/007F25B 17/00
20
PatentIndex Score
0
Cited by
24
References
20
Claims

Abstract

The system uses a batch method process absorption cooling through a number of separate sealed two compartment containers which are moved physically between a heating area, a cooling area, a storage area and a refrigeration area. Pressure differentials alone between the two sections of a vessel power refrigerant movement and evaporation of refrigerant. A valve separates a refrigerant collector and evaporator section from an absorber/desorber section allowing the absorbent and refrigerant to be kept separate until needed. This system can be used with either ammonia water mixtures or with lithium bromide water mixtures.

Claims

exact text as granted — not AI-modified
1. A system for cooling a predetermined area comprising:
 a modular collector with an evaporator section separated from an absorber/desorber section by a valve; each modular collector having
 a refrigerant residing inside the enclosed space of the modular refrigerant collector for transfer between said evaporation section and said absorber/desorber section; 
 an absorbent located in the absorber/desorber section that absorbs a vapor from the refrigerant after the vapor comes into contact with the absorbent; and 
 an attachment rim surrounding the modular collector to support the placement and movement of the modular collector; 
 
 a heating unit to position the modular collector on a rack where the modular collector is supported by an attachment rim, so the absorber/desorber section can be heated to release refrigerant vapor which allows the refrigerant vapor to travel to the evaporator section where the vapor is condensed and trapped in that section after the valve is closed; 
 a cooling unit to position the modular collector on a rack where the modular collector is supported by an attachment rim, so the collector refrigerates the area in the cooling unit upon opening the valve allowing the condensed refrigerant liquid to evaporate from its condensed state and travel to the low pressure area in the absorber/desorber section for future absorption by the absorbent. 
 
     
     
       2. The cooling system of  claim 1  wherein the absorbent is a lithium bromide absorbent. 
     
     
       3. The cooling system of  claim 1  wherein the refrigerant is an ammonia-based refrigerant. 
     
     
       4. The cooling system of  claim 1  wherein the refrigerant is a water-based refrigerant. 
     
     
       5. The cooling system of  claim 1  wherein modular collector is returned to heating unit to repeat the heating cycle. 
     
     
       6. The cooling system of  claim 1  wherein the evaporator section possesses a larger volume ratio compared to the absorber/desorber section. 
     
     
       7. A system for cooling a predetermined area comprising:
 a modular collector with an evaporator section separated from an absorber/desorber section by a valve; each modular collector having
 a refrigerant located in an enclosed space in the modular refrigerant collector and capable of being transferred between the evaporator section and the absorber/desorber section; 
 an absorbent located in the absorber/desorber section that absorbs a vapor from the refrigerant, when coming into contact with said absorbent; 
 an attachment rim surrounding the modular collector to support the placement and movement of the modular collector; 
 
 a heating unit to position the modular collector on a support rack where each modular collector is supported by an attachment rim so the absorber/desorber section can be heated to release refrigerant vapor which travels to the evaporator section, where the vapor is condensed and held after the valve is closed; 
 a cooling unit to position the modular collector on a support rack where each modular collector is supported by an attachment rim so the collector refrigerates the area in the cooling unit upon opening the valve and allowing the refrigerant to evaporate into its vaporized state, whereupon the vapor is absorbed by the absorbent. 
 
     
     
       8. The cooling system of  claim 7  wherein the refrigerant can be located near exterior wall of insulating sleeve. 
     
     
       9. The cooling system of  claim 7  wherein the refrigerant is a ammonia-water material. 
     
     
       10. The cooling system of  claim 7  wherein the absorbent is a lithium bromide material. 
     
     
       11. The cooling system of  claim 7  wherein the refrigerant is a water-based absorbent material. 
     
     
       12. The cooling system of  claim 7  wherein evaporator section has larger volume compared to absorber/desorber section. 
     
     
       13. A method for cooling a predetermined area comprising:
 providing a modular collector with an evaporator section separated from an absorber/desorber section by a valve, said collector contains a refrigerant that can be transitioned between the evaporator section and the absorber/desorber sections, and said absorber/desorber section having an absorbent that absorbs a vapor from the refrigerant after coming into contact with the absorbent and said collector having an attachment ring surrounding the modular collector to support placement and movement of the collector; 
 heating the collector in a heating unit on a support rack where each modular collector is supported by an attachment rim so the absorber/desorber section can be heated to release refrigerant vapor which travels to the evaporator section after the valve is opened and is condensed in the evaporator section and trapped in that area after the valve is closed; 
 refrigerating an area in a cooling unit by positioning the modular collector on a support rack where each modular collector is supported by an attachment rim in the cooling unit upon allowing the condensed refrigerant liquid to evaporate from its condensed state whereupon the refrigerant vapor travels to the absorber/desorber section after the valve is opened. 
 
     
     
       14. The cooling system of  claim 13  wherein the absorbent is a lithium bromide absorbent. 
     
     
       15. The cooling system of  claim 13  wherein the refrigerant is an ammonia-based refrigerant. 
     
     
       16. The cooling system of  claim 13  wherein the refrigerant is a water-based refrigerant. 
     
     
       17. The cooling system of  claim 13  wherein the modular collector is returned to heating unit to repeat the heating cycle. 
     
     
       18. The cooling system of  claim 13  wherein the evaporator section possesses a larger volume ration compared to the absorber/desorber section. 
     
     
       19. The cooling system of  claim 13  wherein the refrigerant can be located near exterior wall of insulating sleeve. 
     
     
       20. The cooling system of  claim 13  wherein the modular collector has an insulating sleeve.

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